I'm pretty sure (as I've been stating this for a while now) that all MS IPs will soon be cross-play/cross-buy day and date across Xbox One and Windows 10 PC. It just makes so much sense to do so. Games going through Xbox Live and Windows 10 can make sure that it is secure, and for games that are multiplayer if a person only wants to play against XBO Controller players, they have the choice.
I guess people who only have Xbox forget that it's going to be less likely that a game will "die out" multiplayer wise if you add the PC gamer base to it. Titanfall for example is dead on PC but alive and well on Xbox One. If we had cross-buy/cross-play, the game would have been bigger (well...maybe a little bit...can't wait for TF2). I guess console owners are also forgetting that if you have cross-buy/play if anything happens to your xbox or your pc and you have the other...you can continue to still play. There's so many more positives than negatives to this.
Shit, I'll have QB on W10 and XBO for the price of 1 game. That's always a plus.